1. 参考文档

Driver_All_in_One_V1.0_MT6735_6753.pdf

 

 

 

 

 

 

2. 代码修改

hal:

vendor/mediatek/proprietary/custom/CRP12XI/hal/audioflinger/audio/audio_custom_exp.h
...
#define USING_CLASSD_AMP //驱动喇叭所以选择需要的功放类型，这里使用D型功放
//#define USING_EXTAMP_HP //使用内部PA则注释掉

kernel:

kernel-3.18/arch/arm/configs/CRP12XI_debug_defconfig
kernel-3.18/arch/arm/configs/CRP12XI_defconfig
...
CONFIG_MTK_SPEAKER=y //作用于：kernel-3.10\sound\soc\mediatek\mt_soc_audio_6580\mt_soc_codec_63xx.c

project:

device/eastaeon/CRP12XI/ProjectConfig.mk
...
MTK_2IN1_SPK_SUPPORT = yes